diff --git a/linker/linker_globals.h b/linker/linker_globals.h
index 32aa09d..de05238 100644
--- a/linker/linker_globals.h
+++ b/linker/linker_globals.h
@@ -87,3 +87,5 @@
  private:
   std::string saved_error_msg_;
 };
+
+__LIBC_HIDDEN__ extern bool g_is_ldd;